Back to EveryPatent.com
United States Patent | 5,642,608 |
Sanderson | July 1, 1997 |
Cylindrical spacers having axially ribbed inner portions and an expanded circumference are located on the doffer shaft of a cotton harvester doffer column to support the doffers in vertically spaced relation and improve shaft strength and bend and vibration resistance. The spacer rib ends have doffer contacting surfaces to bite into the doffer and provide a keying function for enhanced doffer rotational retention.
Inventors: | Sanderson; Leon Franklin (Des Moines, IA) |
Assignee: | Deere & Company (Moline, IL) |
Appl. No.: | 551492 |
Filed: | November 1, 1995 |
Current U.S. Class: | 56/28; 56/41; 56/50 |
Intern'l Class: | A01D 046/08 |
Field of Search: | 56/28,40,41,44,36,50,276,13.5,15.5,45,46,47,48 403/13 |
1747566 | Feb., 1930 | Berry | 56/41. |
2729930 | Jan., 1956 | Walker | 56/41. |
2738636 | Mar., 1956 | Walker | 56/41. |
2741891 | Apr., 1956 | Knoth | 56/41. |
2770086 | Nov., 1956 | Knoth | 56/41. |
3224178 | Dec., 1965 | Kennedy | 56/41. |
3292352 | Dec., 1966 | Shaw | 56/41. |
3333406 | Aug., 1967 | Parkerton | 56/41. |
3411278 | Nov., 1968 | Grant | 56/41. |
3422607 | Jan., 1969 | Tracy et al. | 56/41. |
3469379 | Sep., 1969 | Hubbard | 56/41. |
3894283 | Jul., 1975 | Schonstedt | 324/3. |
3971197 | Jul., 1976 | Batzer et al. | 56/41. |
4226021 | Oct., 1980 | Hoff | 30/276. |
4326369 | Apr., 1982 | Schillerstrom et al. | 56/41. |
4520721 | Jun., 1985 | Decoene | 100/88. |
4819415 | Apr., 1989 | Engelstad et al. | 56/41. |
4928459 | May., 1990 | Thedford et al. | 56/41. |
5412930 | May., 1995 | Sheldon, Jr. | 56/44. |
5557911 | Sep., 1996 | Sanderson et al. | 56/41. |